Chorus of the Tides — ruling 1

Heroic abilities will resolve before the spell that caused them to trigger.

Chorus of the Tides — ruling 2

Heroic abilities will trigger only once per spell, even if that spell targets the creature with the heroic ability multiple times.

Chorus of the Tides — ruling 3

Heroic abilities won’t trigger when a copy of a spell is created on the stack or when a spell’s targets are changed to include a creature with a heroic ability.

Chorus of the Tides — ruling 4

When you scry, you may put all the cards you look at back on top of your library, you may put all of those cards on the bottom of your library, or you may put some of those cards on top and the rest of them on the bottom.

Chorus of the Tides — ruling 5

You choose how to order cards returned to your library after scrying no matter where you put them.

Chorus of the Tides — ruling 6

You perform the actions stated on a card in sequence. For some spells and abilities, that means you’ll scry last. For others, that means you’ll scry and then perform other actions.

Chorus of the Tides — ruling 7

Scry appears on some spells and abilities with one or more targets. If all of the spell or ability’s targets are illegal when it tries to resolve, it won’t resolve and none of its effects will happen. You won’t scry.

Chorus of the Tides : règles, fonctionnement et interactions (MTG)

Chorus of the Tides is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Flying Heroic — Whenever you cast a spell that targets this creature, scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

How it works : Chorus of the Tides

Original English text — Wizards of the Coast / Scryfall

#1September 15, 2013· Wizards of the Coast
Heroic abilities will resolve before the spell that caused them to trigger.
No other card is named in this ruling.
#2September 15, 2013· Wizards of the Coast
Heroic abilities will trigger only once per spell, even if that spell targets the creature with the heroic ability multiple times.
No other card is named in this ruling.
#3September 15, 2013· Wizards of the Coast
Heroic abilities won’t trigger when a copy of a spell is created on the stack or when a spell’s targets are changed to include a creature with a heroic ability.
No other card is named in this ruling.
#4September 15, 2013· Wizards of the Coast
When you scry, you may put all the cards you look at back on top of your library, you may put all of those cards on the bottom of your library, or you may put some of those cards on top and the rest of them on the bottom.
No other card is named in this ruling.
#5September 15, 2013· Wizards of the Coast
You choose how to order cards returned to your library after scrying no matter where you put them.
No other card is named in this ruling.
#6September 15, 2013· Wizards of the Coast
You perform the actions stated on a card in sequence. For some spells and abilities, that means you’ll scry last. For others, that means you’ll scry and then perform other actions.
No other card is named in this ruling.
#7September 15, 2013· Wizards of the Coast
Scry appears on some spells and abilities with one or more targets. If all of the spell or ability’s targets are illegal when it tries to resolve, it won’t resolve and none of its effects will happen. You won’t scry.
No other card is named in this ruling.